Stanford University's 2026 AI Index report found China has narrowed the U.S. lead in artificial intelligence performance—with the gap between top U.S. and Chinese language models shrinking from 1,300+ points in 2023 to just 39 points by March 2026—while leading globally in robot installations and research citations. Meanwhile, the number of AI researchers moving to the U.S. dropped 89% since 2017 and accelerated its decline by 80% in the past year, though more researchers still enter than leave. The U.S. still spends 23 times more on AI investment than China ($285.9B vs $12.4B in 2025) and hosts the most AI researchers overall, but China's infrastructure investments—particularly in electricity capacity—and homegrown talent development are reversing decades of American technological dominance in this sector.